Hello, I just installed WP Page Widget in a site I’m developing using Striking theme.

Once I select the post types and sidebar to customize, I go to the interface to create a new post. In the Page Widgets section, I select customize, and then I’m unable to drag any of the available widgets into the selected widget area.

Needless to say, that if I go to the Appearence/Widgets section, I can normally drag any widgets into the desired section. This functionality is fully supported by the theme.